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[GH-ISSUE #652] Can I use `sub_filter` in proxy host advanced config? #554

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opened 2026-02-26 06:33:22 +03:00 by kerem · 2 comments

kerem commented

2026-02-26 06:33:22 +03:00

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Originally created by @rlogiacco on GitHub (Oct 14, 2020).
Original GitHub issue: https://github.com/NginxProxyManager/nginx-proxy-manager/issues/652

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Please read the setup instructions
Please read the FAQ

What is troubling you?
I'm trying to specify a sub_filter directive for a location within a proxy host, but it doesn't seem to work. By the nginx documentation, it seems the module must be enabled separately during Nginx build: is it enabled in your build?

Originally created by @rlogiacco on GitHub (Oct 14, 2020). Original GitHub issue: https://github.com/NginxProxyManager/nginx-proxy-manager/issues/652 **Checklist** - [x] Please read the [setup instructions](https://nginxproxymanager.com/setup/) - [x] Please read the [FAQ](https://nginxproxymanager.com/faq/) **What is troubling you?** I'm trying to specify a `sub_filter` directive for a location within a proxy host, but it doesn't seem to work. By the [nginx documentation](http://nginx.org/en/docs/http/ngx_http_sub_module.html), it seems the module must be enabled separately during Nginx build: is it enabled in your build?

kerem

2026-02-26 06:33:22 +03:00

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kerem commented

2026-02-26 06:33:22 +03:00

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@rlogiacco commented on GitHub (Oct 15, 2020):

Looks like I found a solution: as I had another nginx in front of the proxy manager the communication between the two was gzipped, as such I must also add a directive to allow processing gzipped content.
The following advanced configuration works correctly:

proxy_set_header Accept-Encoding "";
sub_filter 'href="/' 'href="/admin/';
sub_filter 'src="/' 'src="/admin/';
sub_filter_once off;

Sadly I was trying to proxy the admin interface (/admin -> localhost:81), which seems not doable probably as a consequence of how the admin interface works in terms of HTML and node.js

@rlogiacco commented on GitHub (Oct 15, 2020): Looks like I found a solution: as I had another nginx in front of the proxy manager the communication between the two was gzipped, as such I must also add a directive to allow processing gzipped content. The following advanced configuration works correctly: ``` proxy_set_header Accept-Encoding ""; sub_filter 'href="/' 'href="/admin/'; sub_filter 'src="/' 'src="/admin/'; sub_filter_once off; ``` Sadly I was trying to proxy the admin interface (`/admin` -> `localhost:81`), which seems not doable probably as a consequence of how the admin interface works in terms of HTML and node.js

kerem commented

2026-02-26 06:33:22 +03:00

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@investlab commented on GitHub (Sep 16, 2021):

Same question!

@investlab commented on GitHub (Sep 16, 2021): Same question!

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[GH-ISSUE #652] Can I use sub_filter in proxy host advanced config? #554

[GH-ISSUE #652] Can I use `sub_filter` in proxy host advanced config? #554